Plant growth regulators

Abstract

The invention relates to plant growth regulators, that is, to compositions influencing the growth of plants. The compositions of the invention contain as active agent a 3,6-diamino-acridine N-glycoside of the formula (I) ##STR1## and/or its acid addition salt of the formula (II) ##STR2## in which formulae at least one of R 1 and R 2 stands for an α- and/or β-(D)- and/or α- and/or β-(L)-glucosyl, -galactosyl, -mannosyl, -xylosyl, -arabinosyl, -ribosyl, -6-desoxyglucosyl, -6-desoxygalactosyl, -ramnosyl, -maltosyl, -2-acetamido-2-desoxyglucosyl, -lactosyl, -cellobiosyl, -genciobiosyl or -laminaribiosyl group and the other one represents either a hydrogen atom or one of the enumerated sugar groups; A is a residue of an acid; and p stands for 1, 2 or 3.

What we claim is: 
     
       1. A method for regulating the growth of plants which comprises the step of treating the plant or a propagating part thereof with an effective amount of a 3,6-diaminoacridine N-glycoside of the formula (I) ##STR5## or its agriculturally acceptable acid addition salt of the formula (II) ##STR6## in which formulae at least one of R 1  and R 2  stands for an α- and/or β- (D)- and/or α- and/or β-(L)-glucosyl, -galactosyl, -mannosyl, -xylosyl, -arabinosyl, -ribosyl, -6-desoxyglucosyl, -6-desoxygalactosyl, -ramnosyl, -maltosyl, -2-acetamido-2-desoxyglucosyl, -lactosyl, -cellobiosyl, -genciobiosyl or -laminaribiosyl group and the other one represents either a hydrogen atom or one of the enumerated sugar groups; A is a residue of an agriculturally acceptable acid;   p stands for 1, 2 and 3.   
     
     
       2. The method for regulating the growth of plants defined in claim 1 wherein the active ingredient of the Formula (I) or (II) is 3,6-di(β-glucopyranosylamino)acridine, 3-amino-6-(β-D-glucopyranosylamino)acridine hydrochloride, 3,6-di(α-L-ramnopyranosylamino)acridine, 3,6-di(β-lactopyranosylamino)acridine, 3-(β-D-glucopyranosylamino)-6-(α-L-ramnopyranosylamino)acridine, 3-amino-6-(β-D-glucopyranosylamino)acridine or a mixture thereof. 
     
     
       3. The method for regulating the growth of plants defined in claim 1 wherein an agriculturally acceptable aqueous solution of dimethyl sulfoxide is admixed with the active ingredient of the Formula (I) or (II). 
     
     
       4. The method for regulating the growth of plants defined in claim 1 wherein the agriculturally acceptable acid addition salt of the formula (II) is the hydrochloride, hydrobromide, sulfate or phosphate salt.